Received 2 October 2012
The asymmetric unit of the title salt, K+·C6H3BrCl2NO2S-·1.5H2O, contains one K+ cation, one N-bromo-2,4-dichlorobenzenesulfonamidate anion, one water molecule in general position and one water molecule located on a twofold rotation axis. The K+ cation is hepta-coordinated by three water O atoms and four sulfonyl O atoms from three symmetry-related N-bromo-2,4-dichlorobenzenesulfonamide anions. The S=N distance of 1.575 (3) Å is consistent with that of a double bond. In the crystal, the anions are linked by O-HBr and O-HN hydrogen bonds into layers parallel to the ac plane.
For preparation of N-haloarylsulfonamides, see: Gowda & Mahadevappa (1983). For studies of the effect of substituents on the structures of N-haloarylsulfonamides, see: George et al. (2000); Gowda et al. (2007, 2011a,b); Olmstead & Power (1986).
Data collection: CrysAlis CCD (Oxford Diffraction, 2009); cell refinement: CrysAlis CCD; data reduction: CrysAlis RED (Oxford Diffraction, 2009); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: PLATON (Spek, 2009); software used to prepare material for publication: SHELXL97.
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: NC2295 ).
BTG thanks the University Grants Commission, Government of India, New Delhi, for a one-time grant to Faculty/Professors under UGC-BSR.
George, E., Vivekanandan, S. & Sivakumar, K. (2000). Acta Cryst. C56, 1208-1209.
Gowda, B. T., Foro, S. & Shakuntala, K. (2011a). Acta Cryst. E67, m926.
Gowda, B. T., Foro, S. & Shakuntala, K. (2011b). Acta Cryst. E67, m962.
Gowda, B. T. & Mahadevappa, D. S. (1983). Talanta, 30, 359-362.
Gowda, B. T., Tokarcík, M., Kozísek, J. & Fuess, H. (2007). Acta Cryst. E63, m2115-m2116.
Olmstead, M. M. & Power, P. P. (1986). Inorg. Chem. 25, 4057-4058.
Oxford Diffraction (2009). CrysAlis CCD and CrysAlis RED. Oxford Diffraction Ltd, Abingdon, England.
Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.
Spek, A. L. (2009). Acta Cryst. D65, 148-155.